After seven days sailing down that river, the group had already gathered half a dozen powerful shadows. At that point, Darian pulled out the sect emblem and sent a message. The group then took a detour, moving away from that area.
Their pursuers didn't have Darian's exact location, as long as he kept moving. If he left one spot, it would take a few hours before the sect leaders could confirm his new direction. That was the time they had to rush off somewhere else.
That wouldn't be a problem if they were in a normal region. The pursuers could just use the system's power, and their speed would be insane, catching him fast. But inside danger zones, moving quickly was the same as suicide.
Darian and his group had been moving for a few hours when a Chromaraic Elder from the sect showed up in the skies, closing in quickly. He specialized in controlling the winds, which was why he'd been sent to catch up with Darian's group.